Grammar Nazi

Someone who preys on people on the internet, particularly their language skills, despite the fact the person's first language may not be english or they might even have an intellectual disability, impairment or even dyslexia. All this to boost their own ego - The worst kind of nazi.

Greg (Grammar nazi): "I believe you are mistaken! I, with my superior intellect, have discovered an error in both your writing AND your wit! You will find with ample research and a quick rifle of your nearest DICTIONARY, that the correct contraction you are seeking is they're!"

Bob (sane, normal, non-sociopathic human): 'fuk off grg"